In a blog post, Instagram CTO Mike Krieger confirmed the bug exposed users' details, and said Instagram is working with law enforcement.

" We care deeply about the safety and security of the Instagram community, so we want to let you know that we recently discovered a bug on Instagram that could be used to access some people’s email address and phone number even if they were not public. No passwords or other Instagram activity was revealed".

" Out of an abundance of caution, we encourage you to be vigilant about the security of your account, and exercise caution if you observe any suspicious activity such as unrecognised incoming calls, texts, or emails. Additionally, we’re encouraging you to report any unusual activity through our reporting tools. You can access those tools by tapping the “…” menu from your profile, selecting “Report a Problem” and then “Spam or Abuse", Mike Krieger Co-Founder & CTO.